Package 'trigpoints' reference manual

Title:	Data Set of Trig Points in Great Britain in British National Grid Coordinates
Description:	A complete data set of historic GB trig points in British National Grid (OSGB36) coordinate reference system. Trig points (aka triangulation stations) are fixed survey points used to improve the accuracy of map making in Great Britain during the 20th Century. Trig points are typically located on hilltops so still serve as a useful navigational aid for walkers and hikers today.
Authors:	Phil Mike Jones [aut, cre]
Maintainer:	Phil Mike Jones <[email protected]>
License:	MIT + file LICENSE
Version:	1.0.0
Built:	2025-03-09 04:56:32 UTC
Source:	https://github.com/philmikejones/trigpoints

Trig points.

List of all UK trig points Contains OS data © Crown copyright and database right (2018)

trigpoints
trigpoints

A data frame with 16 variables:

name: Station name, assigned by surveyor
station: Further station details
new_name: Further station details
height: Height above Ordnance Datum in metres
order: Level of precision to which the station was observed. 1 is highest; 4 is lowest
type: Type of station
sec_com_blk: Which computation block the station was computed and adjusted in
com_date: Year of last computation
maintained: Date of last maintenance
lvl_class: Precision of the levelling
lvl_date: Date of levelling
lvl_datum: Datum the levelling refers to
destroyed: 1 = destroyed; 0 = exists
notes: Additional notes
geometry: Coordinates in OSGB36 British National Grid (easting, northing)